Beautiful bow!
for those of you considering a Zipper...one of the finest features of Bob's design was his pairing of shedua and curly maple to create a strong laminated riser that was beautiful, functional, extremely strong, AND LIGHT WEIGHT in comparison to most exotic wood risers.
Remember you will be carrying this bow in the field for many hours and even half a pound can make a huge difference in your energy level at the end of a day of stalking. My 1989 riser is considerably lighter than any other TD recurve I've owned...everyone who touches it remarks on that feature..as well as its beauty.
I highly recommend this wood combination as an option on your Zipper, or any other bow for that matter, if only from a practical perspective.